Hydraulic-nozzle construction



Apr. l0, 1923,

c. B. MCAULAY- HYDRAULIC NOZZLE CONSTRUCTION y Filed Feb.

` -INl/ENTUJQ. LEMLFULY:

i formation forms no part of the present invention.

Extending radially from the outer wall of the nozzle 4 are the guide arms 17 in rear of which are formed preferably integral with the Vnozzle 4, the cylinders 18, and in each of these cylinders is mounted a piston '19 carried by a rod 20, the rods reciprocating through guides 21 in the arms 17, and the guides further reciprocating through packingl glands closing the open end of thecylin-- ders 18. n their outer ends the rodsl 20 connect with the radial arins 23 of a nozzle tip24, the walls of the orifice 25 thereof lving in parallel relation and forming what maybe termed la true open nozzle. The stems, 20`inount the tip 24 so that they orifice 25 thereof is in axial alignment with the dischargev end of the orificey 6 of nozzle 4, and,L the wall' of the orifice 25 is adaptedto one end to contact with the outer end of the wallof the orifice 6 under certain conditions. In other conditions, hereinafter described, the tip 24 is adapted for movement outwardly in advance of the outer end of the wall of the orifice 6 to provide between cooperating endsof said orifice walls an annular air vinlet for the hereinafter described y purpose.

'Y efficient, and said embodiment consists in av pipe 26'connected at one end with the casing inlet 2 for receiving water under pressure.`

IThe oppositeend of the pipe connects with a valve casing 27 preferably in thecenter and saidjcasing at its opposite end is provided with relief channels 28. A reciprocating controlling valve stem 29 is mounted in the casing'27'and the stem carries spaced controlling disk valves 30. From the casing 27 atpoints corresponding to the distance betweenthe4 valves 30 extend two pipes 31 and 32, from which extend the respective branches 31 and 32 connecting respectively theibranches 31 with the cylinders 18 at their forward ends and the branches 32 with the cylinders at theirrear ends. With the outer `end of the stem pivotally connects a `trip lever 33 fulcrumed as at 34, and the lower end of' which is notched as at 35 to receive `an adjustablel trip finger 36 capable of threaded adjustment on the threaded end l1 of the stein 9.

It w-ill be observed that during the Amovement of the needle valve to deliver fractional loads fromy the nozzle, the trip 36 will, de-

pendent jon its adjustment, have during its movement va vpredetermined stroke, tripped the lever 38, and moved the valves to the position illustrated in Figure 2, which enabl'es ythe pressure in pipe 26 to pass through pipe 32 and branches 32 operatingagainst the rearward face of pistons 19 causing said nozzle tip 24 to move forwardly with the i movement of the needle valve a sufiicient distance to enable the fluid to discharge through the orifice 24 under what could be termed full load conditions, the finger 36 trips the lever 33 moving the same forwardly in the casing 27 and connects the pressure pipe 26 with the pipe 31 and branch pipes 31 admitting fluid under pressure into the cylinders 18 in front of piston 19. This pressure. forces the pistons rearwardly in their casings and moves the inner edge of the orifice 25 of the nozzle tip 24 into contact with the outer edge of the wall of the orifice 6 of the nozzle 4, forming of said members 4 and 24 a true open nozzle for operating under full loads.

I claim 1. A hydraulic. nozzle construction including a main nozzle member, a tip associated therewith and provided with an orice for registering with the orifice of the mai-n noz'- zlev member, means for moving` the tip` to and from the nozzle to provide an air inlet between the nozzle and tip, and a needle valve adapted for controlling the stream flow through the nozzle. y

2. A hydraulic nozzleconstruction includ-` ing a main nozzle member, av tip associated therewith and provided with an orifice for aligning with the orifice of the main nozzle member, means for moving' the tip to and from the main nozzle to provide an air inlet between the nozzle and tip and with vthe tipKV orifice in alignment with the orifice of `Vthe main nozzle member,I and a needle valve for controlling the stream flow from said main nozzle member.

3. A hydraulic nozzle construction including a main, nozzle, a tip'associated therewith and provided with an orifice in register with the nozzle orice, a needle valve, and means for varying the relative position of thetip and nozzledependention the operation of the needle valve, and for providing any air inlet between said nozzle and tip when thel needle. valve is in a slightly retracted position.

4; A hydraulicfnozzle*construction includ'- ing a main nozzle, a tip associated therewitln said nozzle and tip each'providedwith an aligned orifice, the walls of the nozzle orifice ill) izo u 112 tip with the orifices maintained in alignment converging toward the discharge end of said orifice and the walls of the tip beino'substantially parallel, the inlet end of the tip being of a diameter not less than the divameter of the discharge end ofthe nozzle,

a needle valve within the nozzle for controlling the fluid passing therethrough, and means for varying the relative position of the nozzle and tip to provide an air inlet between the same on the movement of the needle valve forwardly within the nozzle.

5. A hydraulic nozzle construction including a main nozzle, a tip associated therewith,

said nozzle and tip each provided with an` aligned orifice, the walls of the nozzle orifice coni/'erging toward the discharge endl of said orifice and the walls of the tip being substantially parallel, a needle valve within the nozzle for controlling the fluid passing therethrough, and means for automatically varying the relative position of the nozzle and tip to provide an air inlet between the same on the movement of the needle valve forwardly within the nozzle.

6. A hydraulic nozzle construction including a main nozzle, a tip associated therewith, said nozzle and tip each provided with an aligned orifice, the walls of thenozzle orifice converging toward the discharge end of said orifice and the walls of the tip being sub stantially parallel, a needle valve within the nozzle for controlling the fluid passing therethrough, and means for automatically varying thel relative position of the `nozzle and to provide an annular air inlet between the nozzle and tip, dependent on the position of the needle valve within the nozzle.

7. A hydraulic nozzle construction including a main nozzle, a tip associated therewith,

said tip and nozzle each provided with a bore and said bores being disposed in axial alignment, a needle valve within the main nozzle for controlling the fluid flow therethrough, means for supporting the tip relatively to the nozzle discharge orifice, and means for moving the tip to and from the nozzle with the orifices maintained in alignment to provide an annular air inlet between cooperating ends of said nozzle and tip.

8, A hydraulic nozzle construction including a main nozzle, a tip at its outer end, said tip and nozzle each provided with an orifice and said orifices beingdisposed in alignment, the walls of said nozzle orifice being of a true needle nozzle form and the walls of said tip orifice being of a true open f nozzle form, and means for moving the tip to and from the outer end of the nozzle orifice, to afford an air inlet between the cooperating ends of the two orifices, thecooperatingvends of said main nozzle and tip adapted for abutting contact with their oritice walls forming a symmetrical outlet.

9. A hydraulicnozzle construction consisting-of two parts, almain nozzle part and needle valve within the main nozzle for con-' trolling the fluid flow therethrough, the walls of said orifices being respectively of true needle nozzle form and of true open` nozzle form, and means for automatically adjusting said parts with their orifices in alignment and their adjacent ends in spaced relation to afford an air inlet between the same.

11. In combination with a hydraulic nozzle, a needle valve movably mounted therein to control the stream flow issuing from the orifice thereof, a tip at the discharge end of the nozzle and formed with an orifice of a contour differing from that of the nozzle orifice, and means for moving the tip to and from the end of the nozzle, the inlet end of the tip being of a diameter not less than the diameter of the discharge ,end of the nozzle.

l2. ln combination with a hydraulic nozzle, a needle valve movably mounted therein to control the stream flow issuing from the orifice thereof, a tip at the discharge end of the nozzle and formed with an orifice of a contour differing fromthat of the nozzle orifice, and means for moving the tip outwardly from contact with the nozzle to afford an air inlet between cooperating ends of said orifice, therinlet end of the tip being of a diameter not less than the diameter of the discharge end ofthe nozzle.

13. In combination with a hydraulic noz zie, a needle valve movably mounted therein to control the stream flow issuingl fromV the orifice thereof, a tip at the discharge end of the nozzle and formed with an orice of a contour differing from that of the nozzle orifice, a pair of pistons operatively supporting said tip in position, a cylinder with-r in which each piston operates, a fluid pres-- sure supply connected with opposite ends of each cylinder, a valve for controlling the pressure flow throughsaid connection, and a valve trip adjustably mounted on the needle valve stem for actuating said valve, dependent on theposition of -theneedle valve.

l/l. In 4combination with a hydraulic nozzle, a needle valve movably mounted therein to control the stream flow issuing from the llU ieu

orifice thereof, a tip` at the discharge7 end of the nozzle and formed with an orifice of a contour differing from that of the nozzle orifice, means for guiding saidftip in iits movement, an operating` piston associated Withthe tip for moving they saine, av pistonv Cylinder, a pressure connection with the cylinder, a controlling Valve Within said Conneotion and means for operating the con trolling valve, dependent on the position of the needle valve.

In testimony whereof I have signed. my name to this specification.

CHESTER B. MCAULAY. 

